| Protoplanellinae Microrhynchus Kepner & Ruebush, 1935 | | w | latest taxonomic authority | |
| Dolichomacrostominae Dolichomacrostomum Luther, 1947 | | w | latest taxonomic authority | |
| Dolichomacrostominae Megamorion Rieger & Sterrer, 1968 | | w | latest taxonomic authority | |
| Dolichomacrostominae Paramacrostomum Riedel, 1932 | | w | latest taxonomic authority | |
| Paramacrostomum tricladoides Riedel, 1932 | | w | latest taxonomic authority | |
| Dolichomacrostominae Paromalostomum Ax, 1951 | | w | latest taxonomic authority | |
| Karlingiinae Acanthomacrostomum Papi & Swedmark, 1959 | | w | latest taxonomic authority | |
| Karlingiinae Karlingia Ferguson, 1954 | | w | latest taxonomic authority | |
| Karlingia lutheri (Marcus, 1948) | [with synonyms] | w | latest taxonomic authority | |
| Myozonaria bistylifera Rieger, 1968 | | w | latest taxonomic authority | |
| Dolichomicrostomida Microstomidae Luther, 1907 | | w | other taxonomic work | |
| Microstomum septentrionale Sabussow, 1900 | | w | latest taxonomic authority | |
| Macrostomorpha Bradynectes Rieger, 1971 | | w | primary taxonomic authority (describer) | 213 |
| Bradynectes sterreri Rieger, 1971 | | w | primary taxonomic authority (describer) | |
| Macrostomum hystricinum hystricinum Rieger, 1971 | | w | primary taxonomic authority (describer) | |
